Scrophulariaceae. 



475 



America, (the Rocky mountains), Arctic Asia, Nova Zembla 

 and Spitzbergen. The species prefers fairly dry habitats. 

 M. Porsild records that it is found "on rocky flåts and on 

 heaths" (1912, p. 382). "In poor and open heath, often in 

 gravelly barrens far away from other piants. When growing 





Fig. 41. Pedicularis lanata. 

 A, Transverse section of the leaf. B, Epidermis of the lower, and 

 C of the upper surface of the leaf. D and E, Non-glandular hairs from 

 the lovver surface of the leaf. F, A glandular hair from the stem. G, A 

 non-glandular hair from the basal portion of leaf. (Greenland.) {A 

 about ii«/i; B, C, D, E and F about 220/^; G about ^o/j.) 



amongst other piants, however, the roots also of this species 

 are provided with haustoria'^ (1920, p. 143). During the 

 winter, although the piants in themselves are often bare of 

 snow (1. c), yet the dense tufts ahvays catch some snow 

 between the numerous decaying leaves, and this naturally 



